bianchi gravel bike test Bianchi Impulso Comp GRX 610 2x Bike

The Bianchi Impulso Comp GRX 610 2x Bike occupies a specific and well-considered position in the gravel market — a bike that treats aerodynamics as a genuine design priority without abandoning the compliance and control that uneven terrain demands. Bianchi didn't arrive at this formula arbitrarily. The Impulso draws from the same design thinking that shapes the brand's road racing lineup, translating those aero principles into a frame that can handle a loose gravel descent as capably as a fast race course. The result is a gravel bike that rewards riders who want to move quickly across varied terrain without second-guessing their equipment.

Spend a few hours on the Impulso and the geometry tells you something deliberate is happening underneath you. The longer wheelbase and extended reach — paired with a shorter stem — keep you planted when the surface degrades. The 70mm bottom bracket drop balances stability at pace with enough agility for tighter sections. The bar flare sits at 16 degrees, which opens your hands into a wider, more secure grip position when you're descending fast on loose ground. The D-shaped seatpost works to smooth out road buzz without turning vague. These aren't incidental choices. They reflect a bike built around what gravel racing and long mixed-surface rides actually feel like when you're pushing hard and the road disappears.

The frame uses Bianchi's RC carbon fiber construction — shaped with an aero head tube profile, aerodynamic seatstays, and diamond-section tubing throughout. Integration is clean: no protruding hardware to interrupt airflow, and an aerodynamic fork that pairs logically with the frame's visual and functional intent. Shimano's GRX 610 12-speed mechanical groupset handles shifting duties, offering a drivetrain purpose-built for mixed terrain with the durability and consistent action that long days off-road require. Fulcrum Racing Red 900 wheels round out the build — a reliable alloy wheelset that performs across surfaces without adding unnecessary weight or fragility to the package.

Design Benefits

1. Aero-Informed Carbon Construction: Bianchi's RC carbon frame doesn't treat aerodynamics as a secondary consideration. The aero head tube profile, shaped seatstays, and diamond-section tubing are carried over from the brand's road racing design language — meaning you carry less drag on open gravel roads and fast mixed-surface courses without giving up the structural integrity the terrain demands.
2. Stability-Focused Geometry: The longer wheelbase and lower bottom bracket drop work together to keep the bike predictable under load and at speed. Extended reach allows a more stretched-out, aerodynamic position on the bike, while the shorter stem setup maintains precise steering input — a balance that matters most when the road surface turns rough and fast descents require full confidence in the chassis.
3. Compliance Without Vagueness: The D-shaped seatpost is engineered to flex vertically, reducing fatigue on long days by absorbing vibration from rough surfaces. Unlike designs that sacrifice feel for compliance, the profile retains enough lateral stiffness to keep power transfer direct — so the bike doesn't feel soft underfoot when you're sprinting out of a technical section.
4. GRX 610 Drivetrain for Mixed Terrain: Shimano designed the GRX range specifically around the demands of off-road and gravel riding — wider gear ranges, levers shaped for gloved hands and varied grip positions, and mechanical components built to tolerate mud, dust, and extended use far from a service stand. The 12-speed 2x configuration gives you meaningful range for climbing loaded or riding fast on flatter ground.
5. 16-Degree Bar Flare: When you move your hands to the drops on loose or technical ground, flared bars open your grip position wider than a standard road handlebar. This increases leverage, shoulder width, and control precisely when you need it most — on fast descents or sections where the surface beneath you is unpredictable.

Final Take

The Impulso Comp GRX 610 is built for the rider who takes gravel seriously — someone drawn to fast mixed-surface riding, gravel racing, or long adventurous days where sustained speed matters as much as durability. Bianchi's aero-informed carbon construction and thoughtful geometry make this a gravel bike that rewards effort and inspires confidence across a wide range of conditions. Ride it hard and it gives you honest feedback in return.